Now know I that the LORD saves his anointed; he will hear him from his holy heaven with the saving strength of his right hand.
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Augustine of Hippo
7. "The Lord fulfil all Thy petitions." The Lord fulfil not only the petitions which Thou madest on earth, but those also whereby Thou intercedest for us in heaven. "Now have I known that the Lord hath saved his Christ" (ver. 6). Now hath it been shown to me in prophecy, that the Lord will raise up His Christ again. "He will hear Him from His holy heaven." He will hear Him not from earth only, where He prayed to be glorified; but from heaven also, where interceding for us at the Right Hand of the Father, He hath from thence shed abroad the Holy Spirit on them that believe on Him. "In strength is the safety of His right hand." Our strength is in the safety of His favour, when even out of tribulation He giveth help, that "when we are weak, then we may be strong." "For vain is "that "safety of man," which comes not of His right hand but of His left: for thereby are they lifted up to great pride, whosoever in their sins have secured a temporal safety.
Hath saved. The prophets speak of future events as past. (Berthier)
The people were convinced of God's protection, (Calmet) and anticipated what they would say at their triumphant return.
Anointed (Christus) the king, (Calmet) priest, (Worthington) or our Saviour, at his resurrection, (St. Athanasius) after he had subdued his enemies. (Worthington)
Powers. That is, in strength. His right hand is strong and mighty to save them that trust in him. (Challoner)
The plural is often used to denote something most excellent, (Haydock) great strength, or heavenly forces. (Worthington)